Re: [Qemu-devel] [PATCH RFC v2 4/4] xen/MSI: re-expose masking capability

2015-12-11 Thread Stefano Stabellini
On Fri, 11 Dec 2015, Jan Beulich wrote: > >>> On 11.12.15 at 15:33, wrote: > > On Mon, 7 Dec 2015, Jan Beulich wrote: > >> >>> On 07.12.15 at 15:56, wrote: > >> > On Mon, 7 Dec 2015, Jan Beulich wrote: > >> >> >>> On 07.12.15 at 13:45, wrote: > >> >> > On Tue, 24 Nov 2015, Jan Beulich wrote: > >

Re: [Qemu-devel] [PATCH RFC v2 4/4] xen/MSI: re-expose masking capability

2015-12-11 Thread Jan Beulich
>>> On 11.12.15 at 15:33, wrote: > On Mon, 7 Dec 2015, Jan Beulich wrote: >> >>> On 07.12.15 at 15:56, wrote: >> > On Mon, 7 Dec 2015, Jan Beulich wrote: >> >> >>> On 07.12.15 at 13:45, wrote: >> >> > On Tue, 24 Nov 2015, Jan Beulich wrote: >> >> >> TBD: We probably need to deal with running on

Re: [Qemu-devel] [PATCH RFC v2 4/4] xen/MSI: re-expose masking capability

2015-12-11 Thread Stefano Stabellini
On Mon, 7 Dec 2015, Jan Beulich wrote: > >>> On 07.12.15 at 15:56, wrote: > > On Mon, 7 Dec 2015, Jan Beulich wrote: > >> >>> On 07.12.15 at 13:45, wrote: > >> > On Tue, 24 Nov 2015, Jan Beulich wrote: > >> >> Now that the hypervisor intercepts all config space writes and monitors > >> >> changes

Re: [Qemu-devel] [PATCH RFC v2 4/4] xen/MSI: re-expose masking capability

2015-12-07 Thread Jan Beulich
>>> On 07.12.15 at 15:56, wrote: > On Mon, 7 Dec 2015, Jan Beulich wrote: >> >>> On 07.12.15 at 13:45, wrote: >> > On Tue, 24 Nov 2015, Jan Beulich wrote: >> >> Now that the hypervisor intercepts all config space writes and monitors >> >> changes to the masking flags, this undoes the main effect

Re: [Qemu-devel] [PATCH RFC v2 4/4] xen/MSI: re-expose masking capability

2015-12-07 Thread Stefano Stabellini
On Mon, 7 Dec 2015, Jan Beulich wrote: > >>> On 07.12.15 at 13:45, wrote: > > On Tue, 24 Nov 2015, Jan Beulich wrote: > >> Now that the hypervisor intercepts all config space writes and monitors > >> changes to the masking flags, this undoes the main effect of the > >> XSA-129 fix, exposing the ma

Re: [Qemu-devel] [PATCH RFC v2 4/4] xen/MSI: re-expose masking capability

2015-12-07 Thread Jan Beulich
>>> On 07.12.15 at 13:45, wrote: > On Tue, 24 Nov 2015, Jan Beulich wrote: >> Now that the hypervisor intercepts all config space writes and monitors >> changes to the masking flags, this undoes the main effect of the >> XSA-129 fix, exposing the masking capability again to guests. >> >> Signed-o

Re: [Qemu-devel] [PATCH RFC v2 4/4] xen/MSI: re-expose masking capability

2015-12-07 Thread Stefano Stabellini
On Tue, 24 Nov 2015, Jan Beulich wrote: > Now that the hypervisor intercepts all config space writes and monitors > changes to the masking flags, this undoes the main effect of the > XSA-129 fix, exposing the masking capability again to guests. > > Signed-off-by: Jan Beulich > --- > TBD: We proba

[Qemu-devel] [PATCH RFC v2 4/4] xen/MSI: re-expose masking capability

2015-11-24 Thread Jan Beulich
Now that the hypervisor intercepts all config space writes and monitors changes to the masking flags, this undoes the main effect of the XSA-129 fix, exposing the masking capability again to guests. Signed-off-by: Jan Beulich --- TBD: We probably need to deal with running on an older hypervisor.